Albert Einstein on our mightiest weapon
In a long life I have devoted all my faculties to reach a somewhat deeper insight into the structure of physical reality. Never have I made any systematic effort to ameliorate the lot of men, to fight injustice and suppression, and to improve the traditional forms of human relations. The only thing I did was this: in long intervals I have expressed an opinion on public issues whenever they appeared to me so bad and unfortunate that silence would have made me feel guilty of complicity.
Read about Einstein and the duties of the individual in Brain Pickings.